Derek D# Sharp was born in Thunder Bay, Ontario, Canada, and is a multi-instrumentalist, songwriter, producer, engineer, vocalist, performer and barista.

He has worked with a veritable who’s who in the world of music entertainment, including Red Rider, Jeff Healey, Alannah Myles, Joe Lynn Turner (Rainbow), Alex Ligertwood (Santana) the ambassador of soul, Ellis Hall, Bobby Curtola and Sass Jordan. The list of credits is vast, but he recently produced, engineered and performed on the 25th anniversary recording of the Double Platinum album Racine by Sass Jordan as well as producing her latest blues chart toppers Rebel Moon Blues (2019) and Bitches Blues (2022)

He joined The Guess Who in early 2008, revitalizing the live show with a dynamic and interactive stage presence. He has contributed to bringing in a new generation of fans and is now the longest standing lead singer the band has ever had. He co-wrote and produced the album The Future Is What It Used To Be, in 2018. He wrote and produced the 2023 album Plein D’Amour.